For example I have simple DF:
import pandas as pd
from random import randint
df = pd.DataFrame({'A': [randint(1, 9) for x in xrange(10)],
'B': [randint(1, 9)*10 for x in xrange(10)],
'C': [randint(1, 9)*100 for x in xrange(10)]})
Can I select values from ‘A’ for which corresponding values for ‘B’ will be greater than 50, and for ‘C’ – not equal 900, using methods and idioms of Pandas?